Two reasons why that's wrong come to mind (maybe one reason, they're closely related):
- The people who made the town chose to move there. The people who close up shop are "forced" to leave.
- The kinds of people who move to a town are "special" -- they probably take more initiative than most, they probably have smaller direct families, they're younger. Existing town occupants better reflect wider society.
That second point makes me think about cults :-). I can't remember where I heard it, but someone told me that cults have a lot of trouble with the second generation. Their parents are obviously the sorts of people who join cults, but their kids revert back to the mean and have some common sense.
If one in ten is the sort of person who might pick up and settle elsewhere, well, you can make a town with that if there's something to draw people there. If that draw dies down, though, maybe one in ten will have no trouble leaving and the rest will have more difficulty.
I wonder, though -- US internal migration is trending downward pretty steadily. You'd think it'd go up as barriers to moving have come down... Maybe this is America slowly reverting to the global mean after being a bunch of adventurous immigrants who picked up and left somewhere else.
It's easy to say "Oh well those people shouldn't have bet everything on that factory." but that's not realistic or providing any kind of solution.
It seems like the seeds of the solution are contained in your own post: don't live anywhere but a big city. Or, if you do, realise that you are making a risky bet with your entire family at stake.
Because moving from one rental to another is not that hard.
It seems insane to me to buy even one property in a mining town, let alone multiple.
If you buy property in more diversified regions you won't make as much money, but you have less risk and short term crises will usually pan out.
Sure they’ve been theoretically ‘punished’ for lending too much by making a little bit less profit but it sure doesn’t seem like much of a corrective action to me.
Government subsidized failure is one of the main reasons why communism never worked out. Bad companies need to fail and make way for more efficient or less stupid companies. Otherwise you end up with all your companies operating at roughly the same efficiency as the government (close to 0), because there's no incentive for them to avoid risk. They're rewarded either way.
All American cities that recovered from the '70s-'80s downturn, and even from the 2008 crisis were the ones with a higher number of smaller employers, startups, etc. The ones that diversified. Because they are more resilient to one company's failure.
I'd be very very very hesitant to move to such a town for work. Granted, when you are unemployed you may not have a choice, but I'd definitely settle for a much worse job/worse pay in a non-mono-industry town.
Some towns adapt after a while. For example Lille and its neighboring towns in France. It used to be big in textile/coal industry.
Many old abandoned factories got converted into modern offices for startups, into stores etc... One example (scroll down for pictures) : https://www.usineroubaix.fr/fr/
Reinventing itself?
That's essentially what the German "rust belt" (Ruhrgebiet) attempted to do (partially quite successfully) in the last couple decades.[1]
[1] https://theconversation.com/redesigning-the-rust-belt-an-old...